<?php
namespace Think;
header("Content-Type: text/html;charset=utf-8");
class Mycurl
{
    public $ch = null;
    public $data = null;

    public function __construct($url)
    {
        $this->ch = curl_init($url);
        curl_setopt($this->ch, CURLOPT_HEADER, false);   //不返回头部信息  
        //将 curl_exec()获取的信息以文件流的形式返回，而不是直接输出。  
        curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, true);
        $this->data = curl_exec($this->ch);
    }
    public function __destruct()  //释放资源   
    {
        curl_close($this->ch);
    }

    public function regmatch()   //正则方式抓取  
    {
        $reg = '/(?<=<title>)(.*)(?=<\/title>)/i';  //抓取标题  
        $reg = '/<div\sid="article_content"\sclass="article_content">([^(?<\/div>)]*)<\/div>/si'; //抓取文章内容  
        preg_match($reg,$this->data,$out);
        return $out[1];
    }
    public function result($pos1,$pos2)   //字符串方式抓取  
    {
        $len = strlen($pos1);
        $flag1 = stripos($this->data, $pos1);
        $flag2 = stripos($this->data, $pos2);
        $str = substr($this->data,$flag1,$flag2-$flag1);
        return $str;
    }
    public function exec()   //获取抓取数据  
    {
        $data = Array();
        $data['title'] = self::result('<title>','-卢松松博客</title>');
        $data['title'] = substr($data['title'],7);  //参数7偏移是为了过滤上一步字符串抓取结果中的前面<title>  
        $data['content'] = self::result('<dd class="post-info">','<center>');
        $data['content'] = str_ireplace("/upload/","http://lusongsong.com/upload/",$data['content']);  //这一步解决抓取文章的图片地址错误  
        $data['content'] = str_ireplace("http://lusongsong.comhttp://lusongsong.com","http://lusongsong.com",$data['content']); //解决上一步产生的副作用，   
        $data['content'] = str_ireplace("bloghttp://lusongsong.com","blog",$data['content']);  //继续解决上两步产生的副作用  
        $data['atime'] = time();
        $data['author'] = 'Internet';
        $data['sort'] = '精彩博文';
        // $data['oldlink'] = '';  
        $data['summary'] = substr(strip_tags($data['content']),0,180);  //截取文章摘要  
        return $data;
    }

}

// 测试  
$url = 'http://lusongsong.com/reed/';
$num = 100;   //住区文章数目  
$start = 350; //抓取起点  
   
$Art = M('article');  
   
for($i=$start; $i < $start+$num ; $i++)
{

    $posurl = $url.$i.'.html';
    $curl = new Mycurl($posurl);
    $data = $curl->exec();
    $data['oldlink'] = $posurl;
    if($pos = strpos($data['title'], "出现404错误页面了"))
    {
        continue;
    }
    $Art->add($data);
    $curl = null;
}  
$this->success("执行完成!","index");  
   
   
   